Whether it’s a weekend hike or a full-blown expedition, Columbia’s got the layers, tech, and legacy to back you up. The Fast Trek™ II Beanie is made from double-layered microfleece to keep your head toasty warm while you focus on the path ahead. 100% Polyester, Embroidered Branding, Style Code: 2010951-464, Columbia, Shop All Men's Beanies. Columbia Men's Fast Trek™ II Beanie Collegiate Navy. A double layer fleece beanie to keep your head toasty while you focus on fun. Product composition : 100% Polyester A double layer fleece beanie to keep your head toasty while you focus on fun. Product composition : 100% Polyester. We've been creating innovative outdoor gear and technologies since 1938. It's a good start. We explore ways to design products efficiently so that they require fewer raw materials and components, use less water and energy to manufacture, and are safer for the environment.